[chronojump] Arduino force senso. speeding tare and calibrate

[Xavier Padullés <xpadulles src gnome org>]

commit 62bcdc71b865178ac2bb26a7eb715cf5fccc5496
Author: Xavier Padullés <x padulles gmail com>
Date:   Thu Sep 19 17:06:50 2019 +0200

    Arduino force senso. speeding tare and calibrate

 arduino/ForceSensor/ForceSensor.ino   | 14 ++++---
 arduino/raceAnalyzer/raceAnalyzer.ino | 75 +++++++++++++++++++++++++++++------
 2 files changed, 71 insertions(+), 18 deletions(-)
---
diff --git a/arduino/ForceSensor/ForceSensor.ino b/arduino/ForceSensor/ForceSensor.ino
index 18f13dbf..32304405 100644
--- a/arduino/ForceSensor/ForceSensor.ino
+++ b/arduino/ForceSensor/ForceSensor.ino
@@ -101,7 +101,6 @@ void loop() {
     Serial.print(";");
     Serial.println(scale.get_units(), 2); //scale.get_units() returns a float
   }
-
 }
 
 void serialEvent()
@@ -154,7 +153,8 @@ void start_capture()
 void end_capture()
 {
   capturing = false;
-  Serial.println("Capture ended");
+  Serial.print("Capture ended:");
+  Serial.println(scale.get_offset());
 }
 void get_version()
 {
@@ -186,20 +186,22 @@ void calibrate(String inputString)
   String weightString = get_command_argument(inputString);
   float weight = weightString.toFloat();
   //mean of 255 values comming from the cell after resting the offset.
-  double offsetted_data = scale.get_value(255);
+  double offsetted_data = scale.get_value(50);
 
   //offsetted_data / calibration_factor
   float calibration_factor = offsetted_data / weight / 9.81; //We want to return Newtons.
   scale.set_scale(calibration_factor);
   EEPROM.put(calibrationAddress, calibration_factor);
-  Serial.println("Calibrating OK");
+  Serial.print("Calibrating OK:");
+  Serial.println(calibration_factor);
 }
 
 void tare()
 {
-  scale.tare(255); //Reset the scale to 0 using the mean of 255 raw values
+  scale.tare(50); //Reset the scale to 0 using the mean of 255 raw values
   EEPROM.put(tareAddress, scale.get_offset());
-  Serial.println("Taring OK");
+  Serial.print("Taring OK:");
+  Serial.println(scale.get_offset());
 }
 
 void get_tare()
diff --git a/arduino/raceAnalyzer/raceAnalyzer.ino b/arduino/raceAnalyzer/raceAnalyzer.ino
index c142be07..5e3f82f9 100644
--- a/arduino/raceAnalyzer/raceAnalyzer.ino
+++ b/arduino/raceAnalyzer/raceAnalyzer.ino
@@ -91,8 +91,8 @@ void setup() {
 }
 
 void loop() {
-  //double total = 0;
-  long int total = 0;
+  //double totalForce = 0;
+  long int totalForce = 0;
   int nReadings = 0;
   int offsettedData = 0;
   float force = 0;
@@ -105,9 +105,9 @@ void loop() {
     while (!procesSample) {
       offsettedData = readOffsettedData(0);
       //Serial.println(offsettedData);
-      total +=  offsettedData;
+      totalForce +=  offsettedData;
       //force = readOffsettedData(0);
-      //total += force;
+      //totalForce += force;
       nReadings++;
 
       //If some string comes from Serial process the sample
@@ -130,7 +130,7 @@ void loop() {
       elapsedTime = (4294967295 -  lastSampleTime) + sampleTime; //Time from the last measure to the 
overflow event plus the changingTime
     }
     totalTime += elapsedTime;
-    double meanForce = total / nReadings;
+    double meanForce = totalForce / nReadings;
     lastSampleTime = sampleTime;
 
     //Sending in text mode
@@ -138,7 +138,7 @@ void loop() {
     Serial.print(";");
     Serial.print(totalTime);
     Serial.print(";");
-    Serial.println(total / nReadings);
+    Serial.println(totalForce / nReadings);
 
     procesSample = false;
 
@@ -211,6 +211,8 @@ void serialEvent()
     get_baud_rate();
   } else if (commandString == "set_baud_rate") {
     set_baud_rate(inputString);
+  } else if (commandString == "start_simulation") {
+    start_simulation();
   } else {
     Serial.println("Not a valid command");
   }
@@ -272,13 +274,13 @@ String get_command_argument(String inputString)
 
 void tare(void)
 {
-  long int total = 0;
+  long int totalForce = 0;
   for (int i = 1; i <= 100;  i++)
   {
-    total += loadCell.readADC_SingleEnded(0);
+    totalForce += loadCell.readADC_SingleEnded(0);
   }
 
-  offset = total / 100;
+  offset = totalForce / 100;
   EEPROM.put(offsetAddress, offset);
   Serial.println("Taring OK");
 }
@@ -293,13 +295,13 @@ void calibrate(String inputString)
   //Reading the argument of the command. Located within the ":" and the ";"
   String loadString = get_command_argument(inputString);
   float load = loadString.toFloat();
-  float total = 0;
+  float totalForce = 0;
   for (int i = 1; i <= 1000;  i++)
   {
-    total += readOffsettedData(0);
+    totalForce += readOffsettedData(0);
   }
 
-  calibrationFactor = load * 9.81 / (total / 1000.0);
+  calibrationFactor = load * 9.81 / (totalForce / 1000.0);
   EEPROM.put(calibrationAddress, calibrationFactor);
   Serial.println("Calibrating OK");
 }
@@ -417,3 +419,52 @@ void set_baud_rate(String inputString)
   Serial.print("Setting baud rate to ");
   Serial.println(baudRate);
 }
+
+void start_simulation(void)
+{
+  float vmax = 10.0;
+  float k = 1.0;
+  float currentPosition = 0.0;
+  float lastPosition = 0.0;
+  float displacement;
+
+  
+  Serial.println("Starting capture...");
+
+    Serial.print(0);
+    Serial.print(";");
+    Serial.print(1);
+    Serial.print(";");
+    Serial.println(0);
+
+    Serial.print(0);
+    Serial.print(";");
+    Serial.print(round(1E4));
+    Serial.print(";");
+    Serial.println(0);
+
+  for (float totalTime = 2E4; totalTime < 1E7; totalTime = totalTime + 1E4)
+  {
+            //Sending in text mode
+//    Serial.print(round( displacement / 0.003003 ));
+    Serial.print(0);
+    Serial.print(";");
+    Serial.print(round(totalTime));
+    Serial.print(";");
+    Serial.println(0);
+
+  }
+  for (float totalTime = 0; totalTime <= 1E7; totalTime = totalTime + 1E4)
+  {
+    currentPosition = vmax * (totalTime / 1E6 + pow(2.7182818, (-k * totalTime / 1E6)) / k ) -vmax / k ;
+    displacement = currentPosition - lastPosition;
+    
+        //Sending in text mode
+//    Serial.print(round( displacement / 0.003003 ));
+    Serial.print(round( displacement ));
+    Serial.print(";");
+    Serial.print(round(totalTime + 1E7));
+    Serial.print(";");
+    Serial.println(0);
+  }
+}